/**** 
* Classes
****/ 
// Assets will be automatically created and loaded during gameplay
// Bird class
var Bird = Container.expand(function () {
	var self = Container.call(this);
	var birdGraphics = self.attachAsset('bird', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocity = 0;
	self.gravity = 0.5;
	self.lift = -10;
	self.update = function () {
		self.velocity += self.gravity;
		self.y += self.velocity;
		if (self.y > 2732 - birdGraphics.height / 2) {
			self.y = 2732 - birdGraphics.height / 2;
			self.velocity = 0;
		}
		if (self.y < birdGraphics.height / 2) {
			self.y = birdGraphics.height / 2;
			self.velocity = 0;
		}
	};
	self.flap = function () {
		self.velocity = self.lift;
	};
});
// Pipe class
var Pipe = Container.expand(function () {
	var self = Container.call(this);
	var topPipe = self.attachAsset('pipe', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	var bottomPipe = self.attachAsset('pipe', {
		anchorX: 0.5,
		anchorY: 0.0
	});
	self.gap = 400;
	self.speed = 5;
	self.setPosition = function (x, y) {
		self.x = x;
		topPipe.y = y - self.gap / 2;
		bottomPipe.y = y + self.gap / 2;
	};
	self.update = function () {
		self.x -= self.speed;
		if (self.x < -topPipe.width) {
			self.destroy();
		}
	};
	self.intersects = function (bird) {
		return bird.intersects(topPipe) || bird.intersects(bottomPipe);
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB // Sky blue background
});

/**** 
* Game Code
****/ 
var bird;
var pipes = [];
var score = 0;
var scoreTxt;
function resetGame() {
	bird = game.addChild(new Bird());
	bird.x = 722 / 4;
	bird.y = 722 / 2;
	pipes.forEach(function (pipe) {
		pipe.destroy();
	});
	pipes = [];
	score = 0;
	scoreTxt.setText(score);
}
function addPipe() {
	var pipe = game.addChild(new Pipe());
	var pipeY = Math.random() * (2732 - 800) + 400;
	pipe.setPosition(2048 + pipe.width, pipeY);
	pipes.push(pipe);
}
function updateGame() {
	bird.update();
	pipes.forEach(function (pipe) {
		pipe.update();
		if (pipe.intersects(bird)) {
			LK.showGameOver();
		}
	});
	pipes = pipes.filter(function (pipe) {
		return pipe.x > -pipe.width;
	});
	if (LK.ticks % 90 === 0) {
		addPipe();
	}
	if (LK.ticks % 30 === 0) {
		score++;
		scoreTxt.setText(score);
	}
}
game.down = function (x, y, obj) {
	bird.flap();
};
game.update = updateGame;
scoreTxt = new Text2('0', {
	size: 150,
	fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
resetGame();

===================================================================
--- original.js
+++ change.js
@@ -73,9 +73,9 @@
 var scoreTxt;
 function resetGame() {
 	bird = game.addChild(new Bird());
 	bird.x = 722 / 4;
-	bird.y = 2732 / 2;
+	bird.y = 722 / 2;
 	pipes.forEach(function (pipe) {
 		pipe.destroy();
 	});
 	pipes = [];